Really simple syndication (RSS) takes the content of a website and packages it into a feed that can be easily displayed on other websites. Aggregators take multiple RSS feeds and combine them into a single interface, which can help people track updates to multiple websites at once. RSS also allows websites to syndicate content from third parties.

3 Quick And Easy Ways To Build A Profitable Opt-In List
You finally realize that you need a good opt-in list. After reading countless articles and sought expert advices and have read many success stories of people creating a small fortune with opt-in lists you finally decide to have one of your own.